RESUMEN
His bundle recording combined with atrial pacing permit to evaluate atrio-ventricular conduction and the function of the sinus node by measuring the corrected sinus recovering time (CSRT). Three groups of 10 patients are included in this study: -- Group I is composed of control patients; the CSRT varies between 30 and 450 msec (mean value : 320 msec +/- 123.3). Neither atrio-ventricular nor intraventricular block was observed during His bundle recording combined with atrial pacing. -- Group II, composed of patients with atrial dysrhythmia has a CSRT varying from 720 to 5.900 msec (mean value: 2.750 msec +/- 184.5). Six of these patients have atrio-ventricular conduction disturbances. -- In group III all patients had atrio-ventricular or intraventricular conduction defects without atrial dysrhythmia. CSRT varies between 205 and 510 msec (mean value: 310 +/- 88.6). The authors conclude that atrial dysrhythmia is probably an original degenerative disease which is different from the "Lenègre" disease, by his incidence, the location of the lesions and the clinical issue. This conclusion is made by comparing the results of the authors with the analysis by James of the embryogenesis of the sinus node and of atrial and atrio-ventricular pathways.
Asunto(s)
Fibrilación Atrial/fisiopatología , Aleteo Atrial/fisiopatología , Adulto , Anciano , Fascículo Atrioventricular/fisiopatología , Electrocardiografía/métodos , Femenino , Bloqueo Cardíaco/fisiopatología , Sistema de Conducción Cardíaco/fisiopatología , Humanos , Masculino , Persona de Mediana EdadAsunto(s)
Estenosis de la Válvula Aórtica/diagnóstico , Pulso Arterial , Adulto , Arterias Carótidas , Femenino , Humanos , Masculino , Métodos , Persona de Mediana EdadAsunto(s)
Disautonomía Familiar/inducido químicamente , Eyaculación/efectos de los fármacos , Neostigmina/efectos adversos , Cuadriplejía/fisiopatología , Adulto , Arritmias Cardíacas/inducido químicamente , Determinación de la Presión Sanguínea , Catecolaminas/sangre , Catecolaminas/orina , Electrocardiografía , Frecuencia Cardíaca , Humanos , Hipertensión/inducido químicamente , Inyecciones Espinales/efectos adversos , Masculino , Neostigmina/administración & dosificación , Cuadriplejía/etiología , Reflejo Anormal/etiología , Traumatismos de la Médula Espinal/complicacionesAsunto(s)
Disautonomía Familiar/inducido químicamente , Eyaculación/efectos de los fármacos , Neostigmina/efectos adversos , Reflejo , Accidentes de Tránsito , Adulto , Arritmias Cardíacas/inducido químicamente , Presión Sanguínea , Catecolaminas/sangre , Catecolaminas/orina , Electrocardiografía , Frecuencia Cardíaca , Humanos , Hipertensión/inducido químicamente , Masculino , Neostigmina/farmacología , Cuadriplejía/complicaciones , Cuadriplejía/etiología , Semen/análisis , Espermatozoides , Traumatismos de la Médula Espinal/complicacionesRESUMEN
The usefulness of the ascorbate dilution method in demonstrating intracardiac shunts and valvular incompetence is known. The ascorbate technique can also be applied to the determination of the transit time of regional vascular beds such as the coronary and the renal systems. Furthermore, the determination of central circulation times may be helpful in the diagnosis of caval obstruction. The method is safe, simple, inexpensive, and reliable.